Analyzing Roadside Dust (image) University of Pennsylvania Share Print E-Mail Caption Sampling containers collected airborne particles from the sides of highways in Germany as part of a study led by the University of Pennsylvania's Reto Gieré. The findings suggest that tire wear is a major contributor to roadside pollution. Credit Courtesy of Reto Gieré Usage Restrictions In context of reporting Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.